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Ryan's Diesel Service
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      • Cab & Chassis Turbocharger
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        • 94-02 5.9L
        • 03-07 5.9L
        • 07.5-18 6.7L
        • 19-24 6.7L
      • Ford Powerstroke
        • 99.5-03 7.3L
        • 03-07 6.0L
        • 11-14 6.7L
        • 15-19 6.7L
        • 20-22 6.7L
        • 23-25 6.7L
      • Chevy/GMC Duramax
        • 01-04 LB7
        • 04.5-05 LLY
        • 06-07 LBZ
        • 07.5-10 LMM
        • 11-16 LML
        • 17-23 L5P
    • Air Intake
    • Exhaust Components
    • Lift Pump
    • Transmission
    • S400 Turbocharger
    • Fuel Systems
      • 01-04 LB7
      • 04.5-05 LLY
      • 06-07 LBZ
      • 07.5-10 LMM
      • 11-16 LML
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Diesel Repair in Juneau

Residents of Juneau know that keeping your diesel vehicles in peak condition is essential for both work and play. Whether managing a small fleet or a single truck, Ryan’s Diesel Service stands ready to meet your needs without delay. We cater to all types of diesel vehicles—be it light-duty pickups or heavy-duty semis—with an array of services, including thorough Department of Transportation inspections to keep you roadworthy. Our mobile service truck adds an extra layer of convenience, allowing us to come directly to your location for simpler repairs, minimizing downtime. With our commitment to quality craftsmanship and customer care, you can trust that your diesel engines are in expert hands.

High End Diesel Products Is Our Specialty

Ryan’s Diesel Service is no stranger when it comes to the manufacturing of high-end diesel products.

Learn more about us HERE

Warranties on Our Turbos

Outlined on product pages and HERE

All Turbos Are Manufactured in House

We believe all products should be manufactured in-house to maintain high levels of quality control.

Our Customers Love Us

Over 100 Reviews on google with a 5 star rating. View HERE

High End Machining

We currently have a HAAS VF4 5-axis machining center which runs a fair majority of our products. We also have a HAAS TL-1 lathe.

Turbo balancing is all done in-house on either our West Coast Balancer WCB30 or CWT industries balancer.

Diesel Repair Services – Your Trusted Diesel Repair Shop in Wisconsin

At Ryan’s Diesel Service, we specialize in comprehensive diesel repair and maintenance for light and medium-duty diesel trucks and vehicles. With over 15 years of experience serving Southeastern Wisconsin, our ASE-level technicians deliver honest diagnostics, dependable repairs, and performance-driven service you can count on.

Whether you’re dealing with a hard-to-diagnose engine issue or need routine diesel system maintenance, our team has the expertise and equipment to keep your diesel running strong.

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What We Repair

We provide a full suite of diesel repair services, including:

  • Engine and Drivetrain Repair
  • Diesel engine diagnostics and repair
  • Fuel system service, tuning, and injector replacement
  • Turbocharger replacement, rebuilds, and upgrades
  • Engine swaps and rebuilds

Diesel Performance & Upgrades

  • Performance enhancements and tuning
  • Drop-in turbos and custom builds
  • Power delivery optimization

Suspension, Transmission & More

  • Transmission diagnostics and repair
  • Suspension and drivetrain upgrades
  • Electrical system troubleshooting

Advanced Diagnostics

Our shop uses state-of-the-art tools to pinpoint performance issues fast- saving you time and money on unnecessary repairs.

Why Choose Ryan’s Diesel Service?

Choosing Ryan's Diesel Service in Juneau means supporting a local business dedicated to the community. With years of industry experience, our skilled technicians are adept at repairing a diverse range of vehicles, from light-duty pickups to heavy-duty semis. Whether your fleet consists of five vehicles or fifty, we have the expertise to meet your operational demands efficiently. Our mobile service truck allows us to come directly to your location for minor repairs, minimizing downtime and keeping your fleet on the road. Additionally, we offer DOT inspections to ensure your vehicles comply with all regulatory standards, providing peace of mind for your operations. At Ryan's Diesel, we prioritize our customers’ needs, backed by a satisfaction guarantee on all services performed. With us, you can be confident that your fleet is in capable hands, ready to tackle the challenges of the Alaskan terrain.

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Dodge Turbocharger

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Ford Turbocharger

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GM Turbocharger

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Cab & Chassis Turbocharger

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Shop By Category

  • Shop All
  • Drop in Turbos
    • Cab & Chassis Turbocharger
    • Dodge Cummins
      • 94-02 5.9L
      • 03-07 5.9L
      • 07.5-18 6.7L
      • 19-24 6.7L
    • Ford Powerstroke
      • 99.5-03 7.3L
      • 03-07 6.0L
      • 11-14 6.7L
      • 15-19 6.7L
      • 20-22 6.7L
      • 23-25 6.7L
    • Chevy/GMC Duramax
      • 01-04 LB7
      • 04.5-05 LLY
      • 06-07 LBZ
      • 07.5-10 LMM
      • 11-16 LML
      • 17-23 L5P
  • Air Intake
  • Exhaust Components
  • Lift Pump
  • Transmission
  • S400 Turbocharger
  • Fuel Systems
    • 01-04 LB7
    • 04.5-05 LLY
    • 06-07 LBZ
    • 07.5-10 LMM
    • 11-16 LML
Ryan's Diesel Service

W356S8950 Godfrey Lane
Eagle, WI 53119

Call us at 262-844-9990

sales@ryansdieselservice.com

“Rates from 0–36% APR. Payment options through Affirm are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lenders Law license. For licenses and disclosures, see affirm.com/licenses. For example, a $800 purchase could be split into 12 monthly payments of $72.21 at 15% APR or 4 interest free payments of $200 every 2 weeks.”

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  • Drop in Turbos
  • Dodge Cummins
  • Ford Powerstroke
  • Chevy/GMC Duramax
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  • Exhaust Components
  • Lift Pump
  • Transmission
  • S400 Turbocharger
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